There are no such things as applied sciences, only applications of science.

Oh my goodness the mystery that has prompted my objective. My quality lies exclusively in my tirelessness.

Wine is the healthiest and most health-giving of drinks.

Work usually follows will.

I am on the edge of mysteries and the veil is getting thinner and thinner.

I have the faith of a Breton peasant and by the time I die I hope to have the faith of a Breton peasant's wife.

Preconceived ideas are like searchlights which illumine the path of the experimenter and serve him as a guide to interrogate nature. They become a danger only if he transforms them into fixed ideas-this is why I should like to see these profound words inscribed on the threshold of all the temples of science: 'The greatest derangement of the mind is to believe in something because one wishes it to be so.'